An online list of Moral and Ethical Resources for the Interfaith Consortium for Ecological Civilization website, divided into general, UN and Religious, which speak to your point of many statements already made.  No time or need to reinvent the wheel.

http://www.ic4ec.org/index.php?option=com_content&view=category&layout=blog&id=34&Itemid=54

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We offer here a set of moral and ethical resources that can be brought to bear on environmental concerns, divided into three categories:

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General Resources

UN Resources
Religious Resources